Detailed Information on Publication Record
2021
Cold arousal - A mechanism used by hibernating bats to reduce the energetic costs of disturbance
BACHOREC, Erik, Tomáš BARTONIČKA, Tomáš HEGER, Jiří PIKULA, Jan ZUKAL et. al.Basic information
Original name
Cold arousal - A mechanism used by hibernating bats to reduce the energetic costs of disturbance
Authors
BACHOREC, Erik (703 Slovakia, belonging to the institution), Tomáš BARTONIČKA (203 Czech Republic, guarantor, belonging to the institution), Tomáš HEGER, Jiří PIKULA and Jan ZUKAL (203 Czech Republic, belonging to the institution)
Edition
Journal of Thermal Biology, Elsevier Ltd. 2021, 0306-4565
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 3.189
RIV identification code
RIV/00216224:14310/21:00122665
Organization unit
Faculty of Science
UT WoS
000710182900002
Keywords in English
Hibernation; Myotis myotis; Normothermic arousal; Thermal profile; Torpor
Tags
Tags
International impact, Reviewed
Změněno: 5/11/2021 13:49, Mgr. Marie Šípková, DiS.
Abstract
V originále
During the season of hibernation, temperate bats alternate between prolonged bouts of torpor with reduced body temperature and short arousals with a return to normothermy. Hibernating bats are sensitive to non-tactile stimuli and arouse following changes in microclimatic conditions or disturbance from other bats, potential predators, or humans. Here, we used temperature data loggers to register the skin temperature of 38 Myotis myotis bats over two winters (between January and March), during which regular visits were made to the hibernaculum. Two kinds of arousal were observed, normothermic (Tsk > 25 °C) and cold (Tsk < 15 °C). Although bats responded to the presence of a researcher by arousals of both kinds, cold arousals were more frequent (63.8%). We found that mass loss was not affected by the number of disturbances, however it was in positive relationship with the mass at the beginning of the observation and differed between sex and age categories. Furthermore normothermic bats crawling among cluster-mates initiated arousal cascades, which mainly consisted of cold arousals. We failed to detect any effect of age or sex on the number of arousals initiated by normothermic individuals. Warming by only a few degrees requires less energy than a normothermic arousal and we propose it is sufficient to activate the sensory system in order to assess the relevance of external stimuli. Our results indicate that cold arousals reflect a physiological and behavioural adaptation aimed at avoiding the energetic costs of disturbance that can lead to depletion of fat reserves.
Links
MUNI/A/1098/2019, interní kód MU |
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